/* ── Theme toggle button ───────────────────────────────────────── */
.theme-toggle{background:none;border:none;cursor:pointer;padding:4px 6px;color:rgba(255,255,255,0.6);display:flex;align-items:center;line-height:1;transition:color .15s}
.theme-toggle:hover{color:#fff}
.theme-toggle svg{width:17px;height:17px}
.theme-icon-moon{display:none}
[data-theme="dark"] .theme-icon-sun{display:none}
[data-theme="dark"] .theme-icon-moon{display:block}

/* ── Dark mode: portal vars ─────────────────────────────────────── */
[data-theme="dark"]{
  --bg:#0c1524;
  --surface:#142035;
  --ink:#e2e8f0;
  --muted:#94a3b8;
  --line:rgba(255,255,255,0.1);
  --navy:#93c5fd;
  --blue-tint:rgba(37,99,235,0.15);
  --blue-mid:#60a5fa;
}